Clock-movement.



No. 744,203. PATENTED NOV. 17, 1903.

' P. A. JONES.

, CLOCK MOVEMENT.

APPLICATION FILED SEPT.17. 1897.

N0 MODEL. 2 SHEETS-SHEET l.

' Fi .2 WITIJESSEZS IrL/EP TU K XJX W.

No. 744,203. PATENTBD NOV. 1'7, 1903. F. A. JONES.

CLOCK MOVEMENT.

APPLIUATION FILED S EPT. l7 1897 NO MODEL. 2 SHEETS-SHEET 2.

a I X, 1| 7 X f A 1. a s g F WI'T E55 I rl [J a JV-J G M. r 4 1 nmuuwo.WASMINGTON, n. c.

"m: realms r-mzns co. P

UNITED STATES Patented November 17, 1903.

PATENT OEEIQE.

FLORENTINE A. JONES, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO ELIZABETH M.HILL, OF BOSTON, MASSACHUSETTS.

CLOCK-MOVEM EN SPECIFICATION forming part of Letters Patent No. 744,203,dated November 17, 1903..

Application filed September 17, 1897. Serial No. 651,977. (No model.)

To aZZ whom, it may concern.-

Be it known that I, FLORENTINE A. JoNEs, of Boston, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Clock -Movements for Gage Mechanisms, of which thefollowing is a specification.

My invention relates to clock-movements, and more particularly to thosemovements which are employed for rotating the charts or dials ofrecording-gages.

The clock-movements now in general use in recording-gages are of theusual constructionthat is, the center arbor makes one revolution in onehour, and upon this arbor is loosely placed a wheel upon which therecording chart or dial is affixed, said char carrying wheel being madeto rotate upon the center arbor once in twenty-four hours by means ofother wheels and pinions called dial-works. The series of gearscomposing the dial-works, so called, are entirely independent of thetrain-wheels of the clock---that is, they do not sustain the spring ormotive power of the clock-and are usually placed on the outside of thetop or bottom plate, the connection with the train being made by meansof a small pinion called the cannonpinion, which is tightly fitted uponthe center arbor outside of the plate. As these dialworks, so called,simply turn the wheel loosely placed upon the center arbor carrying thechart or dial and do not transmit motion or power to any other part ofthe clock, it will readily be seen that they,and consequently the chartor dial, will be subject to loss of motion or backlash, as it is termed,inasmuch as they may be and are naturally turned forward when putting ona chart and remain in that position until the natural running of theclock causes the center arbor to rotate sufliciently to take up the lostmotion between the several gears composing the dial-works. This lostmotion caused by the dial or chart not being fixed to one of thetrain-arbors, so called, results in an error in the time-reading of thechart amounting to several minutes. As in recording-gages it isabsolutely necessary that the recording chart or dial should rotate atthe rate 01": one revolution in twenty-four hours, it follows that thechart cannot be fixed upon and made to rotate with the center arborrofthe ordinary clock, since the center arbor makes one revolution in onehour. Moreover, there is no arbor in the clock-train which rotates oncein twenty-four hours. Consequently in order to accomplish the desiredobject of immovably fixing the recording chart or dial upon an arborwhich will rotate once in twenty-four hours it becomes necessary to makea clock-movement of a different construction in several important pointsfrom anything that is now used.

Hence the primary object of this invention is to prevent the backlash orlost motion of the dial or chart, whereby the record thereon may be madewith the utmost accuracy. To accomplish this end, it is necessary thatthe center arbor or one of the arbors which sustains the power of theclock-movement be made to rotate once in twenty-four hours and that thechart or recording-dial be immovably fixed thereon and rotate with thearbor.

Another object of this invention is to improve the construction ofclock-movements, so that a weaker spring or less power shall be requiredto operate a clock running eight days than has heretofore been required.

Still another object of this invention is to obtain a clock of unusuallylong running time with less friction and within a limit of power whichshall conserve the isochronal qualities necessary to good timekeeping.

To these ends, therefore, my invention consists of a clock-movement forthe purposes set forth possessing certain features of construction andrelative arrangement of parts, all as fully illustrated on the drawingsand now to be describedin detail and then pointed in the claims heretoappended.

Reference is to be had to the accompanying drawings and to the lettersand figures marked thereon, forming a part of this specification,similar letters and figures indicating similar parts or features, as thecase may bc,wherever they occur.

It will be borne in mind that it is not practical in drawings of thesize shown to show the many details of teeth of wheels and leaves 50 ofthe pinions in the actual and correct char- 10o acters. Thereforereference should be had to the description as set forth in thespecification for actual characters used.

Of the drawings, Figure 1 illustrates a clock-movement in elevationcontaining my invention and showing a portion of a recording dial orchart attached to the center arbor. Fig. 2 is a clock-movement inelevation with the top plate removed, showing my invention and thecombination of the trainwork of wheels and pinions, which is the same asrepresented in Fig. 1. Fig. 3 is a horizontal section taken on line 3 3of Fig. 1, showing the center arbor and the manner of fixing the chartthereon.

In all the figures the letter A represents the top plate of aclock-movement, and B the bottom plate, a the pillars or posts forholding the two plates together, a the screws, 9 the square end of theactuatingarbor upon which the ratchet Wheel 1' is placed, 5 theescape-wheel and pinion, p the pallets, and c the balance-wheel, theseparts being of common usage. The actuatingwheel is designated by 1, thecenter wheel by 2, the center arbor by e, the third wheel and pinion by3, and the fourth wheel and pinion by 4..

The actuating-wheel 1 (shown in Fig. 2) may be constructed in differentmanners, as is well known. In one construction it is made with a barrel,in which the spring (not shown) is coiled, and in this construction thearbor remains stationary during the operation of the clock, while thewheel and barrel rotate upon the arbor. By another and differentconstruction the arbor turns with the wheel during the operation of theclock, while the barrel in springclocks remains stationary and inweight-clocks the arbor, the wheel, and the barrel all turn during theoperation of the clock, it being of common usage to construct anactuating-wheel in either of the above-mentioned manners.

The usual time-train of a clock consists of a center wheel making onerevolution in an hour, a third wheel and pinion, a fourth wheel andpinion, with an escapement-that is,three Wheels and two pinions, asidefrom the es capement, constitute the time-train of an ordinary clock.Preferably the escapement of watches and clocks is arranged to cause therevolution of the fourth wheel once in sixty seconds or one minute. Byreference to Fig. 2, which is intended to represent the construction ofthe fourth wheel making one revolution in a minute, it will be seen thatI have added two extra wheels and pinions between the so-called thirdwheel and pinion of usual construction and the center wheel. These extrawheels and pinions are wheel X, pinion X, wheel Y, and pinion Y.Assuming that the fourth wheel (marked 4 in Fig. 2) is provided with apinion of eight leaves, making one revolution in a minute, (which is acommon construction.) taking mazes into the third wheel, (marked 3,)havingsixty teeth and provided with a pinion of eight leaves taking intothe extra wheel Y, having sixty-four teeth and provided with a pinion often leaves taking into the extra Wheel X, having sixty teeth andprovided with a pinion of fifteen leaves taking into the center wheel 2,having sixty teeth, then the center wheel 2 and its arbor 6 will makeone revolution in twenty-four hours. Therefore it will be seen by theexplanation heretofore given and in connection with the drawings that Icause the revolution of the center arbor once in twenty-four hours bythe addition of two wheels and pinions to the ordinary ti me-train ofwheels and pinions with which a clockwork is usually provided.

In all clockworks running one week or more as at present constructedwherein the center arbor rotates once an hour it becomes a ne cessityand always has been the universal custom to connect the actuating-wheelwith the arbor of the center wheel by means of fixing a small pinion,usually of ten or twelve leaves, upon the center arbor, (this pinionbeing in addition to the center wheel,) and an intermediate wheel andpinion is made use of to connect the actuating-wheel with the said smallpinion upon the center arbor. This construction is absolutely requiredin a clock running one week or more as ordinarily constructed whereinthe center arbor rotates once in an hour in order to obtain sufficientlength of running time. It is obvious that this constructionnecessitates the use of much greater and coarser wheels and pinions andmuch larger pivots, thereby greatly increasing the friction andnecessitating the use of a much larger power to operate the clock thanis required by my construction of introducing two extra Wheels andpinions in the time-train between the center wheel and the third-wheelpinion. Again, it is evident that neither the above construction nor anysimilar construction can be applied with practical results to aclockwork of my construction as herein set forth, wherein the centerarbor rotates once in twenty-four hours, as the amount of power requiredto operate the clock would be far beyond the limits of isochronalaction, and therefore useless as a timepiece. To obviate this difficultyand not only to keep within the limit of power required by goodtimekeeping constructions, but also to greatly reduce the amount ofpower heretofore required to operate an eight-day clock, I have devisedthe construction of meshing the teeth of the actuating-wheel directlywith the teeth of a wheel or gear upon the center arbor (shown in Fig.2) in the simpler form of meshing the teeth of the actuating-wheeldirectly with the teeth of the center wheel, thereby so increasing theleverage and simplifying the construction that a clock constructed asherein shown and set forth will not only operate with much less powerthan will a clock of the ordinary construction, but its isochronalqualities are greater and its durability is largely increased.

Referring to Fig. 3, the center wheel 2 is shown as rigidly fixed uponthe center arbor e, and upon the center arbor e is rigidly fixed orattached a disk D, having a quill or extension formi nga partof the diskD,through which the arbor 6 passes; This quill is also provided with ascrew-thread on its outside, upon which the hollownut is fixed by meansof a similar screw-thread cut within the hole through its center, andunder this nutfand upon the disk D is placed a washer n, and between thediskD and the washer n is placed the chart or dial G, which is centeredupon the disk D by the extension or quill passing through a hole in thecenter of the chart G and being clamped thereon by turning down the nutfupon the washer n. It will be observed that thediskDis tightlyfittedupon the center arborcand is also rigidly fixed thereon by the pin S,passing through the quill or extension of the disk D and through thecenter arbor 6, so that no movement of the disk D can take placeindependent of the center arbor e. By the arrangement described it willbe seen that I dispense with the usual dial-wheels and that therecording-chart will be rigidly held, as the power of the clockspringtends to hold the center arbor firmly in one direction at all times.

It is evident from the preceding explanation that my improvements aredesigned to be and may be readily adapted and applied to variousdifferent clock constructions.

Having thus explained the nature of the invention and described a way ofconstructing and using the same, although without attempting to setforth all of the forms in which it may he made or all of the modes ofits use, I declare that what I claim is-- 1. A clock-movement,comprising an actuating-wheel and its arbor, an escapement, and theusual third and fourth train-wheels, and pinions, including a centerarbor, having a wheel-gear intermeshing with the actuatingwheel, twoextra wheelsand pinions interposed in the train between a gear upon thecenter arbor and the usual third-wheel pinion, thereby transmitting thepower from the center arbor to the said third-wheel pinion, the gearsbeing so proportioned as to cause the rotation of the center arbor oncein twenty-fonr hours, and means for rigidly securing a chart upon thesaid center arbor, whereby the chart is held against backlash and ismade to rotate with the said arbor.

2. A clock-movement comprising an actuating-wheel 1, and its arborg, anarbor chaving a single gear-Wheel 2 intermeshing with and driven by thewheel 1, an escapement, and the usual train-wheels and pinions, 3, t, anarbor having a pinion X intermeshing with and driven by the singlegear-wheel 2 on the center arbor c, and also having a wheel X, and anarbor having a pinion Y i11- termeshing with and driven by the Wheel X,and also having a wheel Y intermeshing with and driving the pinion ofthe usual third wheel 3, substantially as set forth.

3. A clock-movement comprising an actuating-wheel and its arbor, anescapement, the usual third and fourth train-wheels and pinions, and acenter arbor, having a wheel-gear intermeshing with the actuating-wheel,two extra wheels and pinions interposed in the train between thewheel-gear of the center arbor, and the usual third-wheel pinion, fortransmitting the power from the center arbor to the said third-wheelpinion, with means for rigidly securinga chart upon one of the saidarbors, whereby said chart is held against back lash and is made torotate with the arbor.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this lath day of September, A. D.1897.

FLORENTINE A. JONES.

\Vitnesses:

O. F. BROWN, A. D. HARRISON.

